/**
 * Copyright (c) 2015-2016, Chill Zhuang 庄骞 (smallchill@163.com).
 * <p>
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * <p>
 * http://www.apache.org/licenses/LICENSE-2.0
 * <p>
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.ks.core.util;

import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.time.DateFormatUtils;
import org.apache.commons.lang3.time.DateUtils;

import java.sql.Timestamp;
import java.text.DateFormat;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Date;

public class DateUtil {


    /**
     * 获取YYYY格式
     *
     * @return
     */
    public static String getYear() {
        return formatDate(new Date(), "yyyy");
    }

    /**
     * 获取YYYY格式
     *
     * @return
     */
    public static String getYear(Date date) {
        return formatDate(date, "yyyy");
    }

    public static String getYearTime() {
        return formatDate(new Date(), "yyyy.MM");
    }

    /**
     * 获取YYYY-MM-DD格式
     *
     * @return
     */
    public static String getDay() {
        return formatDate(new Date(), "yyyy-MM-dd");
    }

    /**
     * 获取yyyy.mm.dd mm:ss
     */
    public static String getNear(Date date) {
        return formatDate(date, "yyyy.MM.dd hh:mm");
    }

    /**
     * 获取YYYY-MM-DD格式
     *
     * @return
     */
    public static String getDay(Date date) {
        return formatDate(date, "yyyy-MM-dd");
    }

    /**
     * 获取YYYYMMDD格式
     *
     * @return
     */
    public static String getDays() {
        return formatDate(new Date(), "yyyy-MM");
    }

    /**
     * 获取YYYYMMDD格式
     *
     * @return
     */
    public static String getDays1() {
        SimpleDateFormat format = new SimpleDateFormat("yyMMdd");
        return format.format(new Date());
    }

    public static String getDays2() {
        SimpleDateFormat format = new SimpleDateFormat("dd");
        return format.format(new Date());
    }

    /**
     * 获取yyyy.mm.dd格式
     */
    public static String getMdays(Date date) {
        return formatDate(date, "yyyy.MM.dd");
    }

    /**
     * 获取YYYYMMDD格式
     *
     * @return
     */
    public static String getDays(Date date) {
        return formatDate(date, "yyyyMMdd");
    }

    /**
     * 获取YYYY-MM-DD HH:mm:ss格式
     *
     * @return
     */
    public static String getTime() {
        return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss");
    }

    public static String getTimes() {
        return formatDate(new Date(), "yyyy年MM月dd日 HH:mm");
    }

    public static String getTimess(Date date) {
        return formatDate(date, "yyyy-MM-dd HH:mm:ss");
    }

    /**
     * 获取YYYY-MM-DD HH:mm:ss.SSS格式
     *
     * @return
     */
    public static String getMsTime() {
        return formatDate(new Date(), "yyyy-MM-dd HH:mm:ss.SSS");
    }

    /**
     * 获取YYYYMMDDHHmmss格式
     *
     * @return
     */
    public static String getAllTime() {
        return formatDate(new Date(), "yyyyMMddHHmmss");
    }

    /**
     * 获取十位时间戳
     *
     * @return
     */
    public static String getTimeMillis() {
        String timestamp = String.valueOf(Calendar.getInstance().getTimeInMillis());
        if (timestamp.length() > 10) {
            timestamp = timestamp.substring(0, 10);
        }
        return timestamp;
    }

    public static String dateToStamp(String s) throws Exception {
        String res;
        SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        Date date = simpleDateFormat.parse(s);
        long time = date.getTime();
        res = String.valueOf(time);
        return res;
    }

    /**
     * 获取YYYY-MM-DD HH:mm:ss格式
     *
     * @return
     */
    public static String getTime(Date date) {
        return formatDate(date, "yyyy-MM-dd HH:mm:ss");
    }

    public static String formatDate(Date date, String pattern) {
        String formatDate = null;
        if (StringUtils.isNotBlank(pattern)) {
            formatDate = DateFormatUtils.format(date, pattern);
        } else {
            formatDate = DateFormatUtils.format(date, "yyyy-MM-dd");
        }
        return formatDate;
    }

    public static void main(String[] args) {
        System.out.println(getDay());
        System.out.println(getDay().equals("2019-03-06"));
    }

    /**
     * @param s
     * @param e
     * @return boolean
     * @throws
     * @Title: compareDate
     * @Description:(日期比较，如果s>=e 返回true 否则返回false)
     * @author kingdee
     */
    public static boolean compareDate(String s, String e) {
        if (s.length() == 19 && e.length() == 19) {
            if (parseTime(s) == null || parseTime(e) == null) {
                return false;
            }
            return parseTime(s).getTime() >= parseTime(e).getTime();
        } else {
            if (parseDate(s) == null || parseDate(e) == null) {
                return false;
            }
            return parseDate(s).getTime() >= parseDate(e).getTime();
        }
    }

    /**
     * 日期比较，如果s>=e 返回true 否则返回false
     *
     * @param s
     * @param e
     * @return
     */
    public static boolean compareDate(Date s, Date e) {
        return s.getTime() >= e.getTime();
    }

    /**
     * 格式化日期
     *
     * @return
     */
    public static Date parseDate(String date) {
        return parse(date, "yyyy-MM-dd");
    }

    /**
     * 格式化日期
     *
     * @return
     */
    public static Date parseTime(String date) {
        return parse(date, "yyyy-MM-dd HH:mm:ss");
    }

    /**
     * 格式化日期
     *
     * @return
     */
    public static Date parse(String date, String pattern) {
        try {
            return DateUtils.parseDate(date, pattern);
        } catch (ParseException e) {
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 格式化日期
     *
     * @return
     */
    public static String format(Date date, String pattern) {
        return DateFormatUtils.format(date, pattern);
    }

    /**
     * 把日期转换为Timestamp
     *
     * @param date
     * @return
     */
    public static Timestamp format(Date date) {
        return new Timestamp(date.getTime());
    }

    /**
     * 校验日期是否合法
     *
     * @return
     */
    public static boolean isValidDate(String s) {
        return parse(s, "yyyy-MM-dd HH:mm:ss") != null;
    }

    /**
     * 校验日期是否合法
     *
     * @return
     */
    public static boolean isValidDate(String s, String pattern) {
        return parse(s, pattern) != null;
    }

    public static int getDiffYear(String startTime, String endTime) {
        DateFormat fmt = new SimpleDateFormat("yyyy-MM-dd");
        try {
            int years = (int) (((fmt.parse(endTime).getTime() - fmt.parse(
                    startTime).getTime()) / (1000 * 60 * 60 * 24)) / 365);
            return years;
        } catch (Exception e) {
            // 如果throw java.text.ParseException或者NullPointerException，就说明格式不对
            return 0;
        }
    }

    /**
     * <li>功能描述：时间相减得到天数
     *
     * @param beginDateStr
     * @param endDateStr
     * @return long
     * @author kingdee
     */
    public static long getDaySub(String beginDateStr, String endDateStr) {
        long day = 0;
        SimpleDateFormat format = new SimpleDateFormat(
                "yyyy-MM-dd");
        Date beginDate = null;
        Date endDate = null;

        try {
            beginDate = format.parse(beginDateStr);
            endDate = format.parse(endDateStr);
        } catch (ParseException e) {
            e.printStackTrace();
        }
        day = (endDate.getTime() - beginDate.getTime()) / (24 * 60 * 60 * 1000);

        return day;
    }

    /**
     * <li>功能描述：时间相减得到天数
     *
     * @return long
     */
    public static long getDaySub(Date beginDate, Date endDate) {
        long day = (endDate.getTime() - beginDate.getTime()) / (24 * 60 * 60 * 1000);
        return day;
    }


    public static Date getAfterDayDate(int days) {
        Calendar canlendar = Calendar.getInstance();
        // 日期减 如果不够减会将月变动
        canlendar.add(Calendar.DATE, days);
        Date date = canlendar.getTime();
        return date;
    }

    /**
     * 获得指定分钟数后的时间
     *
     * @param time
     * @param minute
     * @return
     */
    public static Date getAfterMinuteDate(Date time, int minute) {
        Calendar canlendar = Calendar.getInstance();
        canlendar.setTime(time);
        canlendar.add(Calendar.MINUTE, minute);
        Date date = canlendar.getTime();
        return date;
    }

    /**
     * 得到n天之后是周几
     *
     * @param days
     * @return
     */
    public static String getAfterDayWeek(String days) {
        int daysInt = Integer.parseInt(days);

        Calendar canlendar = Calendar.getInstance();
        canlendar.add(Calendar.DATE, daysInt);
        Date date = canlendar.getTime();
        SimpleDateFormat sdf = new SimpleDateFormat("E");
        String dateStr = sdf.format(date);
        return dateStr;
    }

    /**
     * 得到N天之后的日期
     */
    public static Date getAfterDate(Date time, int day) {
        Calendar canlendar = Calendar.getInstance();
        canlendar.setTime(time);
        canlendar.add(Calendar.DATE, day);
        Date date = canlendar.getTime();
        return date;
    }

    /**
     * 得到N年之后的日期
     */
    public static Date getDateByYear(Date time, int year) {
        Calendar calendar = Calendar.getInstance();
        calendar.setTime(time);
        calendar.add(Calendar.YEAR, year);
        Date date = calendar.getTime();
        return date;
    }

    /**
     * 获取某年某月的第一天
     *
     * @param year
     * @param month
     * @return
     */
    public static Date getStartMonthDate(int year, int month) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month - 1, 1);
        return calendar.getTime();
    }

    /**
     * 获取某年某月的最后一天
     *
     * @param year
     * @param month
     * @return
     */
    public static Date getEndMonthDate(int year, int month) {
        Calendar calendar = Calendar.getInstance();
        calendar.set(year, month - 1, 1);
        int day = calendar.getActualMaximum(5);
        calendar.set(year, month - 1, day);

        return calendar.getTime();
    }

    /**
     * 获取前三十天日期
     *
     * @return
     */
    public static Date getLastMonth() {
        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
        Calendar theCa = Calendar.getInstance();
        Date today = new Date();
        theCa.setTime(today);
        theCa.add(theCa.DATE, -30);//最后一个数字30可改，30天的意思
        Date start = theCa.getTime();
        return start;
    }

    /**
     * 获取前
     *
     * @return
     */
    public static Date getCurrentDate() {
        Calendar todayEnd = Calendar.getInstance();
        todayEnd.set(Calendar.HOUR, 23);
        todayEnd.set(Calendar.MINUTE, 59);
        todayEnd.set(Calendar.SECOND, 59);
        todayEnd.set(Calendar.MILLISECOND, 999);
        return todayEnd.getTime();
    }

}
